diff --git a/docker-common.sh b/docker-common.sh
index cf7e048..df85c21 100755
--- a/docker-common.sh
+++ b/docker-common.sh
@@ -25,6 +25,11 @@ curl 'https://git.openwrt.org/?p=keyring.git;a=blob_plain;f=gpg/17E1CE16.asc' |
  && gpg --fingerprint --with-colons '<openwrt-devel@lists.openwrt.org>' | grep '^fpr:::::::::6768C55E79B032D77A28DA5F0F20257417E1CE16:$' \
  && echo '6768C55E79B032D77A28DA5F0F20257417E1CE16:6:' | gpg --import-ownertrust
 
+# PGP key for 18.06 release builds
+curl 'https://git.openwrt.org/?p=keyring.git;a=blob_plain;f=gpg/15807931.asc' | gpg --import \
+ && gpg --fingerprint --with-colons '<openwrt-devel@lists.openwrt.org>' | grep '^fpr:::::::::AD0507363D2BCE9C9E36CEC4FBCB78F015807931:$' \
+ && echo 'AD0507363D2BCE9C9E36CEC4FBCB78F015807931:6:' | gpg --import-ownertrust
+
 # OpenWrt Build System (PGP key for 19.07 release builds)
 curl 'https://git.openwrt.org/?p=keyring.git;a=blob_plain;f=gpg/2074BE7A.asc' | gpg --import \
  && gpg --fingerprint --with-colons '<pgpsign-19.07@openwrt.org>' | grep '^fpr:::::::::D9C6901F45C9B86858687DFF28A39BC32074BE7A:$' \